Locomotive sand-box.



PATENTED M AB.. 27, 1906.y

W. H. GLOWRY. LOGOMOTIVE SAND BOX. APPLICATION PILEDKJUNH 1o. 1905.

Y E.. Eni S.

UNITED eSTATES ,PATENT OFFICE.

' WILLIAM CLOWRY, OF CHICAGO, ILLINOIS, vASSIGNOR OF To JOHN nnss,` lOF CHICAGO, ILLINOIS.

Patented Merch 27, 190e.

To a/ZZ- whom it may cone-ern,.-

`Be it known that I, WILLIAM H. CLOWRY, -a

citizen of. the Unit-ed States, residing a't Chi-.-

cago, in the county of Cook and State of Illino1s,.liave invented certain new and useful Improvements in Locomotive i Sand-Boxes, of which the following isv a' speoieetion.

The resent invention is intended to overcome. t e diicultyoften experiencedby lcornotive-engineers of keeping the sand, in the sand-box inra dry condition, so that'it maybe readily discharged onto the rails at the pro er time. i l .l

' SandoXes Vare ordinarily positioned immediately above thel steam-space in a loco,- motive, and the temperature at such p o'int is lessthan at the forward end of the boiler,

` when; the holler-wells Awill be highly heated .by the escaping products of combustion.

Furthermore, the `boilerewalls will collect l more or less moisture immediately 'above the steam-space by the condensation of atmos-A pheric moisture when cold water vis Yintroduced into the boiler, or, in other words, the boiler will sweat. This necessitates the use of sand which has`been reviously subjected to la drying process be ore its introduction into lthe sand-box.

'The obj ect ofthe present invention is to so construct and locate the sand-box that the sand will be kept dry and -granular'at alll times, and this object is accomplished by positioning the sand-box at the forward end of the locomotive beyond the steam-space and at a point where theheated vproducts of combustion escaping through the smokestaok willkeep the sand thoroughly ldry and in f suitable condition to be discharged through the pipes. By locating the sandboX at the forward end of the boiler it will not be necessary to subject the sand to a preliminary drying before its introduction 1nto the sand-box, since vthe sand will become thoroughly dried and granular Aby the timeV steam is generated in the boiler and the locomotive is started.-

The invention consists inthe features of construction and combination of parts hereinafter described and claimed.

In the drawings, Figure 1 is a sectional view of the'forward end of a locomotive, showing the sand-box of present invention; and Fig. 2, a cross-sectional view of the same looking forward.

The sandejbo'x is applied toalocomotive .having` flues 1 passing 'throu h a flue-'plate 2, which forms a cross-wall in t e boiler-shell '3, l which shell is closed at its forward end by .a head 4 ofthe usual construction. Immed'i# ately in front of thefluesis a diagonally-disposed baffle-plate 5, in front of Whioh is a smoke-stack 6, through which the smoke 'and heated products` of combustion escape. Y, A

sand-box 7 is located forward' of the smokestack on top ofthe boiler-shell and, as shown, is of dome-shaped o construction and provided with a removable cap or cover 8. 'The sand-box 'is open at its lower end and secured to the boiler-shell by means of an an# glo-plate j9,wh'ch is bolted to the shell and to the sandebox. Immediately beneath the sand-*box is a rounded plate '10, which 'followethe lgeneral curvature of the boiler-'shell jand is separated therefrom by means of plates 1.1, which converge toward one an;` other atl their lower ends, and the el'irved plate and side plates are secured together and to the boiler by means of bolts'or rivets 12,

forming a drying-,chamber 18, which extends around the topof thefront end of the boiler on the inside of the shell and '1S tapered 'toward its lower ends on eaohside for the 'd-sf.

The sand is poured into the Sand# boX from the top and fills the annular space v inthe drying-chamber, as shown in Fig.l 2, and the tapered formation of the chamber adapts it to discharge the sand through the.

pipes 14 without difliculty. The heated products of combustion passing from the flues are deflected bythe baffle-plate and heatv the forward end of the boiler-shell as they pass out ofthe smoke-stack, keeping the air hot and dry at all times, and the hot dry air acting on the curved or arched walls of the drying-chamber keep the sand in a granular state at all times and prevent any clogging of the sand. f

`The sand-box of the present invention is located at the only .point where it is capable of being thoroughly heated with dry heat, since the remaining portions of the boiler are "devoted to the steam-space, and the temperi ature at such points Will be less than at the,

forward end of the boiler. At the same time the sand-box is located at a point where it is entirely out of the road of the operating mechanism of the engine, and the heatingchamber inside of the boiler-shell will not ob struct or impair the usefulness of the boiler, since ordinarily the space forward of the iiues is practically empty and the' location of the interior heating-chamber at this point will not interfere in any way with the existing arrangements in locomotive-boilers.

The provision of an interior heating-chamber of the arched construction herein shown enables a smaller exterior sand-box to be employed, since a large amount of sand will be contained within the drying-chamber, thereby enabling the exterior sand-box to be of lesser capacity than that of the sand-boxes ordinarily employed. The arched formation of the heating-chamber provides a large amount of superficial heating area, so that the dry heat of the escaping products of combustion will act quickly and effectively on the sand, keeping it dry at all times and ready for discharge.

Although the drying-receptacle is described as a tapered inner chamber formed from plates of metal, it is obvious that its shape and construction might be varied without departing from the spirit of the invention, which consists, essentially, in locating the 'sand-box at the point indicated.

What I regard as new, and desire to secure by Letters Patent, is

l. A locomotive sand-box positioned forward of the steam-space and consisting of an outer receptacle opening into an inner chamber having walls adapted to be heated by the escaping products of combustion, substantiallyas described.

2. A locomotive sand-box positioned ford ward of the smoke-stack and consisting of a receptacle exterior of' the shell of the boiler and an interior chamber having arching walls adapted to be heated by the escaping products of combustion, substantially as described.

3. A locomotive sand-box positioned. forward of the smoke-stack and consisting of a receptacle exterior of the shell of the boiler, an interior chamber having arching walls adapted to be heated by the escaping products of combustion, and pipes on opposite sides of the boiler entered through the boilershell into the arched interior chamber near its lower ends, substantially as described.

4. A locomotive sand-box positioned forward of the smoke-stack and consisting of an outer receptacle secured to the exterior of the boiler-shell opening into an inner chamber having an arching inner wall and side walls secured to the interior of the boiler-shell and forming in combination therewith a heating chamber, and discharge-pipes entered into the heating-chamber near its lower ends on opposite sides of the boiler-shell, substantially as described.

5. A locomotive sand-box consisting of' an outer receptacle secured to the boiler-shell and communicating with a s ace formed by an arching inner wall and si e walls forming a chamber tapering toward its ends and adapted to be heated by the heat of the locomotive, and discharge-pipes entered into the tapered ends of the heating-chamber, substantially as described.

WILLIAM I-I. CLOWRY.

Witnesses:

WALKER BANNING, SAMUEL W. BANNING. 

